Thread: Looking for help - Beginner programming

I am attempting to make a heart rate calculator program. Here is a little overview of what I am trying to do.
It must use a constructor and get and set methods. It must print heart rate ranges and the user's information(age).
I am sure there are many problems with my code I am truly a beginner this is one of my first programs. Any obivous errors pointed out would help a lot.
Thank you.

   // Use scanner to get inputs
import java.util.Scanner;
 
// Declare class
public class HeartRates {
	private int Age;
	private int DayOfBirth;
	private int MonthOfBirth;
	private int YearOfBirth;
	private double MaxHeartRate;
	private double MinTargetHeartRate;
	private double MaxTargetHeartRate;
	private String FirstName;
	private String LastName;
 
 
 
public HeartRates(_FirstName) //This is incomplete, I am very confused on the constructor concept.
{
	FirstName = _FirstName;
 
}
 
 
 
	// method to set age
	public void setAge(int n) // store age
	{ 
		Age = n;
	} // end method setAge
 
	// method to get age
	public int getAge()
	{
		return Age;
	}
 
	// method to set day of birth
	public void setDayOfBirth(int z)
	{
		DayOfBirth = z; 
	} // end method setDayOfBirth
 
	// method to get day of birth
	public int getDayOfBirth()
	{
		return DayOfBirth;
	}
 
	// method to set month of birth
	public void setMonthOfBirth(String month)
	{
		MonthOfBirth = month;
	}
 
	// method to get month of birth
	public String getMonthOfBirth()
	{
		return MonthOfBirth;
	}
	// method to set year of birth
	public void setYearOfBirth(int y)
	{
		YearOfBirth = y;
	}
 
	// method to get year of birth
	public int getYearOfBirth()
	{
		return YearOfBirth;
	}
 
	// method to set first name
	public void setFirstName(String first)
	{
		FirstName = first;
	}
 
	// method to get first name
	public String getFirstName()
	{
		return FirstName;
	}
 
	// method to set last name
	public void setLastName(String last)
	{
		LastName = last;
	}
 
	// method to get last name
	public String getLastName()
	{
		return LastName;
	}
 
 
 
 
	// method that calculates and returns age
	public int Age () {
 
		Age = (2014 - YearOfBirth);
	}
 
	public int MaxHeartRate () {
		MaxHeartRate = 220 - Age;
	}
 
	public int MaxTargetHeartRate () {
		MaxTargetHeartRate = (MaxHeartRate*.085);
	}
 
	public int MinTargetHeartRate () {
		MinTargetHeartRate = (MaxHeartRate*0.50);
	}
 
 
 
	public static void main(String[] args) {
		System.out.print("Enter first and last name \n");
		System.out.print("Enter birthdate in format xx/xx/xxxx \n");
		System.out.printf("%s", getFirstName());
	} 
 
 
 
 
 
}

Well I just don't know what to do next, it will not run. One question is, when using the get and set method, does using that automatically ask the user for input? Or do I have to do something separately to ask for input?

Such as this, is it scanning in the first name?


/// method to set first name
public void setFirstName(String first)
{
FirstName = first;
}

// method to get first name
public String getFirstName()
{
return FirstName;
}

How do I ask for the input for first name and implement it with the get and set method? I have a small amount of coding with c++ using scanf(%d) and I don't think that works here.